FV... does size matter?

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Paddington
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FV... does size matter?

Post by Paddington » Sun Jan 21, 2018 11:02 pm

I am currently brewing 10 litre brews, mainly to get more experience of brewing and also to get a good variety of styles in stock.

I now have all four of my 10l fermenters on the go and I’m looking to do a fifth brew this week. My question is, will putting a 10 litre brew in a 25l fv increase the risk of infection?

Thanks.

McMullan
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Re: FV... does size matter?

Post by McMullan » Sun Jan 21, 2018 11:19 pm

No, size at this level doesn't matter. So much CO2 is produced during primary fermentation. There's nothing to be worried about. My latest batch has been split into two 14L batches, in 23L FVs. It is fine to do this.

Fil
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Re: FV... does size matter?

Post by Fil » Mon Jan 22, 2018 12:31 am

I agree an active fermentation in a 10l brew will push out enough co2 to evacuate all the air from the fv pretty quickly..
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Re: FV... does size matter?

Post by Paddington » Mon Jan 22, 2018 9:03 am

Thanks, both.

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Re: FV... does size matter?

Post by North Wales Brewer » Fri Jan 26, 2018 9:04 pm

I use a small FV and have no problems :D

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spook100
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Re: FV... does size matter?

Post by spook100 » Wed Feb 21, 2018 1:27 pm

Brulosophy conducted an experiment on this exact thing. Blind tasting results showed that people could tell the difference between beers fermented with low headspace (fermenter full) and high headspace (fermenter half-full). The majority preferred the beer with low headspace.
http://brulosophy.com/2017/03/13/the-im ... t-results/
A fine beer may be judged with only one sip, but it's better to be thoroughly sure.

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Sadfield
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Re: FV... does size matter?

Post by Sadfield » Wed Feb 21, 2018 2:28 pm

I often run half full, never noticed any difference to the beers that have filled the fv. How big is the headspace on an open fv?

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Re: FV... does size matter?

Post by IPA » Wed Feb 21, 2018 2:35 pm

Sadfield wrote:
Wed Feb 21, 2018 2:28 pm
I often run half full, never noticed any difference to the beers that have filled the fv. How big is the headspace on an open fv?

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They obviously didn't include beer open fermented in the blind tasting.
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Re: FV... does size matter?

Post by jaroporter » Wed Feb 21, 2018 3:01 pm

i think this is gonna come down to something like volume of beer vs length of fermentation vs airlock or open etc..

..or in other words.. totally subjective to the individuals taste and methods. try it and see..
all that brulosophy experiment really proved was that most people don't put chinook in an english bitter for a good reason.. :roll:

what did you go for in the end OP?
dazzled, doused in gin..

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Re: FV... does size matter?

Post by McMullan » Wed Feb 21, 2018 3:44 pm

Sadfield wrote:
Wed Feb 21, 2018 2:28 pm
How big is the headspace on an open fv?
I'm sure 'brulosophy' could conjure up some bullshit to 'answer' that. I get brief, contractile responses of a skeletal muscle every time someone mentions them. They know their bullshit, that's for sure.

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Re: FV... does size matter?

Post by spook100 » Wed Feb 21, 2018 4:33 pm

McMullan wrote:
Wed Feb 21, 2018 3:44 pm
I'm sure 'brulosophy' could conjure up some bullshit to 'answer' that. I get brief, contractile responses of a skeletal muscle every time someone mentions them. They know their bullshit, that's for sure.
This, OP. A well constructed and comprehensive answer to your question, backed up by solid facts. Good thing too because none of us likes to call out a bullshitter :wink:
A fine beer may be judged with only one sip, but it's better to be thoroughly sure.

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Re: FV... does size matter?

Post by McMullan » Wed Feb 21, 2018 6:43 pm

spook100 wrote:
Wed Feb 21, 2018 4:33 pm
McMullan wrote:
Wed Feb 21, 2018 3:44 pm
I'm sure 'brulosophy' could conjure up some bullshit to 'answer' that. I get brief, contractile responses of a skeletal muscle every time someone mentions them. They know their bullshit, that's for sure.
This, OP. A well constructed and comprehensive answer to your question, backed up by solid facts. Good thing too because none of us likes to call out a bullshitter :wink:
Please, no more 'facts'. WTF are 'facts' anyway, in the context of an experiment? The dim misleading the dim, I'm afraid. Awesome :^o Another contractile response of a skeletal muscle :roll: Don't forget to hit the pay button ,if you feel my bullshit has mislead you sufficiently. Pay for the 'pleasure' =D>

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